1. To become stiff; to become more rigid or less flexible.
2. --Like bristles rose my stiffning hair.
3. To become more thick, or less soft; to be inspissated; to approach to hardness; as, melted substances stiffen as they cool.
4. The tender soil then stiffning by degrees--
5. To become less susceptible of impression; to become less susceptible of impression; to become less tender or yielding; to grow more obstinate.
6. Some souls, we see, grow hard and stiffen with adversity.
